US20200300567A1 - Cartridge Extractor - Google Patents
Cartridge Extractor Download PDFInfo
- Publication number
- US20200300567A1 US20200300567A1 US16/776,992 US202016776992A US2020300567A1 US 20200300567 A1 US20200300567 A1 US 20200300567A1 US 202016776992 A US202016776992 A US 202016776992A US 2020300567 A1 US2020300567 A1 US 2020300567A1
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- United States
- Prior art keywords
- strap
- hook
- leg
- extractor
- slide
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 230000001351 cycling effect Effects 0.000 description 2
- 238000000605 extraction Methods 0.000 description 2
- 230000008030 elimination Effects 0.000 description 1
- 238000003379 elimination reaction Methods 0.000 description 1
- 239000000284 extract Substances 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 230000007257 malfunction Effects 0.000 description 1
Images
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F41—WEAPONS
- F41A—FUNCTIONAL FEATURES OR DETAILS COMMON TO BOTH SMALLARMS AND ORDNANCE, e.g. CANNONS; MOUNTINGS FOR SMALLARMS OR ORDNANCE
- F41A15/00—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun
- F41A15/12—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns
- F41A15/14—Cartridge extractors, i.e. devices for pulling cartridges or cartridge cases at least partially out of the cartridge chamber; Cartridge ejectors, i.e. devices for throwing the extracted cartridges or cartridge cases free of the gun for bolt-action guns the ejector being mounted on or within the bolt; Extractors per se
Definitions
- This invention relates to cartridge extractors for use in semiautomatic firearms.
- Reliable extractor operation is important for uninterrupted cycling of semiautomatic firearms.
- Malfunctioning extractors may be responsible for a range of stoppages, including failure to extract a spent cartridge and failure to eject a spent cartridge, the notorious “stovepipe” jam being an example of the latter. Failure to extract is very serious as it may not be possible to quickly clear the firearm by merely cycling the action. There are thus opportunities to improve the reliability of extractor operation and thereby reduce the frequency of stoppages due to extractor malfunctions.
- One approach is to reduce the number of parts associated with the extractor such as the elimination of discrete biasing springs for biasing the extractor into engagement with the cartridge casing.
- the invention concerns an extractor mountable on a slide of a firearm for extracting a chambered cartridge.
- the extractor comprises a hook for engaging the cartridge.
- An elongated strap extends from the hook.
- a projection is mounted on the strap distal to the hook. The projection extends in a first direction transversely to a longitudinal axis of the strap.
- a leg has a first end attached to the strap. The leg extends lengthwise along the strap in spaced apart relation thereto.
- the strap defines a notch.
- the notch is positioned distal to the hook and in facing relation to the leg.
- the notch may be positioned adjacent to the projection.
- the strap defines an opening therethrough.
- the opening is positioned distal to the hook.
- the opening has a bore axis oriented transversely to the longitudinal axis of the strap and the first direction.
- the opening may comprise a slot.
- the opening is positioned adjacent to the projection.
- the first end of the leg is attached to the strap adjacent to the hook.
- the extractor comprises a spur positioned at a second end of the leg oppositely disposed to the first end.
- the spur extends in a direction parallel to the first direction.
- An example embodiment comprises a ramp surface positioned on the hook. The ramp surface is angularly oriented with respect to the longitudinal axis of the strap.
- a further example embodiment comprises a beam having a first end attached to the leg and a second end oppositely disposed. The second end defines an opening therethrough, the opening having a bore axis oriented transversely to the longitudinal axis of the strap and the first direction.
- the second end of the beam is positioned adjacent to the projection.
- the first end of the beam is attached to the leg proximate to a second end thereof oppositely disposed to the first end.
- the invention also encompasses a firearm for shooting a chambered cartridge.
- An example firearm embodiment according to the invention comprises a frame.
- a slide is mounted on the frame and is movable between a position in battery and a position out of battery.
- An extractor is pivotably mounted on the slide for extracting the chambered cartridge when the slide moves out of battery.
- the extractor comprises a hook for engaging the cartridge.
- An elongated strap extends from the hook.
- a projection is mounted on the strap distal to the hook. The projection extends in a first direction transversely to a longitudinal axis of the strap. The projection is received within a recess defined by the slide.
- a leg has a first end attached to the strap. The leg extends lengthwise along the strap in spaced apart relation thereto. The leg has a second end oppositely disposed from the first end. The second end of the leg engages the slide.
- the strap defines a notch.
- the notch is positioned distal to the hook and in facing relation to the leg.
- the notch may be positioned adjacent to the projection.
- the strap defines an opening therethrough.
- the opening is positioned distal to the hook.
- the opening has a bore axis oriented transversely to the longitudinal axis of the strap and the first direction.
- the opening may comprise a slot.
- the opening is positioned adjacent to the projection.
- the first end of the leg is attached to the strap adjacent to the hook.
- the extractor comprises a spur positioned at a second end of the leg oppositely disposed to the first end.
- the spur extends in a direction parallel to the first direction.
- An example embodiment comprises a ramp surface positioned on the hook. The ramp surface is angularly oriented with respect to the longitudinal axis of the strap.
- a further example embodiment comprises a beam having a first end attached to the leg and a second end oppositely disposed. The second end defines an opening therethrough, the opening having a bore axis oriented transversely to the longitudinal axis of the strap and the first direction.
- the second end of the beam is positioned adjacent to the projection.
- the first end of the beam is attached to the leg proximate to a second end thereof oppositely disposed to the first end.
- FIG. 1 is an isometric exploded view of an example firearm and extractor according to the invention
- FIG. 2 is an isometric partially cut-away view of the firearm shown in FIG. 1 ;
- FIG. 3 is a partially cut-away top view of a portion of the firearm shown in FIG. 1 ;
- FIG. 3A is a view of a component from FIG. 3 shown on an enlarged scale
- FIGS. 4 and 5 are partially cut-away top views illustrating operation of the firearm shown in FIG. 1 ;
- FIG. 6 is a top view of another example embodiment of an extractor according to the invention.
- FIG. 7 is a top view of another example embodiment of an extractor according to the invention.
- FIGS. 8 and 9 are partially cut-away top views illustrating operation of the firearm using the example extractor embodiment of FIG. 7 .
- FIG. 1 is an exploded view of a firearm 10 having an example extractor 12 according to the invention.
- Firearm 10 in this example a semiautomatic pistol, comprises a frame 14 on which a slide 16 is movably mounted.
- Slide 16 is slidably movable lengthwise along the frame 14 between a closed position (shown), known as “in battery”, and an open position, known as “out of battery”.
- Slide 16 cycles in and out of battery during operation of the firearm 10 to extract a spent cartridge casing and chamber a fresh cartridge which it strips from the firearm's ammunition magazine as is well understood.
- the slide 16 may also be cycled manually to extract and/or chamber a live cartridge. Extraction of the cartridge from the firing chamber is effected by the extractor 12 mounted on the slide 16 .
- the term “cartridge” is used herein to refer to both a live cartridge as well as a spent cartridge casing.
- the example extractor 12 comprises a hook 18 .
- hook 18 is positioned between the breech block 24 and the barrel chamber 26 and engages the rim 20 (in this example, a rebated rim) of a cartridge 22 in the chamber 26 .
- an elongated strap 28 extends from the hook 18 .
- Strap 28 defines a longitudinal axis 30 which, in this example, extends in a direction substantially parallel to the line of motion of the slide 16 .
- a projection 32 is mounted on the strap 28 distal to the hook 18 .
- Projection 32 extends in a first direction 34 oriented transversely to the longitudinal axis 30 of the strap 28 and is received within a recess 36 defined by the slide 16 . Engagement between the projection 32 and the slide 16 causes the extractor 12 to remain with the slide 16 as it moves out of battery (motion to the left along axis 30 in FIG. 3 ), and engagement between the hook 18 and the cartridge rim 20 subsequently extracts the cartridge 22 from the chamber 26 .
- the strap 28 defines a notch 37 . Notch 37 is positioned distal to hook 18 and in facing relation with a leg 44 (described below). It is advantageous to position notch 37 adjacent to the projection 32 .
- a pin 42 (see also FIG.
- the extractor 12 also comprises a leg 44 .
- Leg 44 has a first end 46 attached to the strap 28 , in this example, the leg is attached adjacent to the hook 18 .
- Leg 44 extends lengthwise along and in spaced apart relation to the strap 28 .
- Leg 44 has a second end 48 oppositely disposed from the first end 46 , the second end 48 engaging the slide 16 .
- a spur 50 is positioned at the second end 48 of the leg 44 .
- Spur 50 extends in a direction substantially parallel to the first direction 34 in which the projection 32 extends.
- Spur 50 is received within a receptacle 52 in the slide 16 and anchors the second end of the leg 44 , which thereby acts as a biasing spring when the strap 28 pivots on pin 42 about the pin axis 39 .
- the extractor 12 further comprises a ramp surface 54 positioned on the hook 18 .
- Ramp surface 54 is angularly oriented with respect to the longitudinal axis 30 of the strap 28 .
- the orientation angle 56 is arranged so that the hook 18 pivots away from the cartridge 22 when the ramp surface 54 engages the cartridge as the slide 16 moves into battery (motion to the right in FIG. 3 ).
- FIGS. 4 and 5 Operation of the extractor 10 is described with reference to FIGS. 4 and 5 .
- the slide 16 is in battery, a cartridge 22 is chambered, and the hook 18 engages the rebated rim 20 .
- the hook 18 moves with the slide by virtue of the engagement between the projection 32 and the slide 16 , thereby drawing the cartridge 22 out of the chamber 26 .
- the cartridge will hit an ejector (not shown) which flips it out and away from the firearm 10 through an ejector port 58 in the slide (see FIG. 1 ).
- FIG. 5 as the slide 16 returns to battery it strips and chambers another cartridge 22 .
- the ramp surface 54 engages the rim 20 of the cartridge.
- the orientation angle 56 of the ramp surface causes the strap 28 to pivot clockwise on pin 42 about the pin axis 39 , thereby allowing the hook to pass over the rim 20 .
- the pivoting motion of the strap 28 bends the leg 44 , which acts as a spring to bias the hook 18 toward the cartridge 22 . Once the hook 18 clears the rim 20 it snaps into engagement with the rim under the biasing force of the leg 44 as depicted in FIG. 4 .
- the strap 28 defines an opening 38 which has a bore axis 40 oriented transversely to both the longitudinal axis 30 of the strap 28 and the first direction 34 in which the projection 32 extends.
- the opening 38 is positioned distal to the hook 18 , advantageously adjacent to the projection 32 and may comprise a slot to permit additional free play and more reliable engagement between hook and cartridge.
- pin 42 mounted on the slide 16 , extends through the opening 38 . Pin 42 thus retains the strap 28 to the slide and allows pivoting motion of the strap about the bore axis 40 . Pivoting motion of the strap 28 permits the hook 18 to deflect and engage the rim 20 of a chambered cartridge 22 as the slide moves into battery as described above.
- FIG. 7 shows another example embodiment of an extractor 60 according to the invention.
- Extractor 60 comprises a hook 62 for engaging a cartridge 22 , the hook 62 being positioned between the breech block 24 and the barrel chamber 26 when extractor 60 is mounted on firearm 10 ( FIG. 1 ).
- An elongated strap 64 extends from the hook 62 and defines a longitudinal axis 66 which extends parallel to the line of motion of the slide 16 .
- a projection 68 is mounted on the strap 64 distal to the hook 62 .
- Projection 68 extends in a first direction 70 oriented transversely to the longitudinal axis 66 of the strap 64 and is received within the recess 36 defined by the slide 16 . Engagement between the projection 68 and the slide 16 causes the extractor 60 to remain with the slide 16 as it moves out of battery (motion to the left in FIG. 7 ) to extract the cartridge 22 from the chamber 26 .
- extractor 60 comprises a leg 72 .
- Leg 72 has a first end 74 attached to the strap 64 , in this example adjacent to the hook 62 .
- Leg 72 extends lengthwise along and in spaced apart relation to the strap 64 .
- Example extractor 60 further comprises a beam 76 .
- a first end 78 of beam 76 is attached to the leg 72 .
- attachment of the beam 76 to the leg 72 is proximate to the second end 80 of the leg oppositely disposed to the leg's first end 74 .
- Beam 76 has a second end 82 oppositely disposed from the beam's first end, the second end 82 defining an opening 84 therethrough.
- opening 84 has a round cross sectional shape, but other shapes, such as a slotted cross section are also feasible. Opening 84 has a bore axis 86 oriented transversely to both the longitudinal axis 66 of the strap 64 and the first direction 70 in which the projection 68 extends.
- pin 42 mounted on slide 16 , extends through opening 84 and retains the extractor 60 to the slide. Extractor 60 pivots about the bore axis 86 on the pin 42 . It is advantageous that the opening 84 be positioned adjacent to the projection 68 and that the second end 80 of the leg 72 be engageable with and react against the slide 16 .
- Hook 62 also comprises a ramp surface 88 oriented transversely to the longitudinal axis 66 of the strap 64 .
- the orientation angle 90 is arranged so that the hook 62 pivots away from the cartridge 22 as the slide 16 moves into battery.
- FIGS. 8 and 9 Operation of the extractor 60 is described with reference to FIGS. 8 and 9 .
- the slide 16 is in battery, a cartridge 22 is chambered, and the hook 62 engages the rebated rim 20 .
- the hook 62 moves with the slide by virtue of the engagement between the projection 68 and the slide 16 , thereby drawing the cartridge 22 out of the chamber 26 .
- the cartridge will hit an ejector (not shown) which flips it out and away from the firearm 10 through an ejector port 58 in the slide (see FIG. 1 ).
- FIG. 9 as the slide 16 returns to battery (motion to the right) it strips and chambers another cartridge 22 .
- the ramp surface 88 engages the rim 20 of the cartridge.
- the orientation angle 90 (see FIG. 7 ) of the ramp surface 88 causes the extractor 60 to pivot clockwise on pin 42 about the bore axis 86 , thereby allowing the hook 62 to pass over the rim 20 .
- the pivoting motion of the extractor 60 bends the beam 76 , which acts as a spring to bias the hook 62 toward the cartridge 22 . Once the hook clears the rim it snaps into engagement with the rebated rim under the biasing force of the beam 76 as depicted in FIG. 8 .
- extractors according to the invention will result in more reliable extraction of spent cartridges, thereby improving the reliability of semiautomatic firearms.
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Abstract
Description
- This application is based upon and claims benefit of Priority to U.S. Provisional Application No. 62/821,065, filed Mar. 20, 2019, which application is hereby incorporated by reference herein.
- This invention relates to cartridge extractors for use in semiautomatic firearms.
- Reliable extractor operation is important for uninterrupted cycling of semiautomatic firearms. Malfunctioning extractors may be responsible for a range of stoppages, including failure to extract a spent cartridge and failure to eject a spent cartridge, the notorious “stovepipe” jam being an example of the latter. Failure to extract is very serious as it may not be possible to quickly clear the firearm by merely cycling the action. There are thus opportunities to improve the reliability of extractor operation and thereby reduce the frequency of stoppages due to extractor malfunctions. One approach is to reduce the number of parts associated with the extractor such as the elimination of discrete biasing springs for biasing the extractor into engagement with the cartridge casing.
- The invention concerns an extractor mountable on a slide of a firearm for extracting a chambered cartridge. In an example embodiment the extractor comprises a hook for engaging the cartridge. An elongated strap extends from the hook. A projection is mounted on the strap distal to the hook. The projection extends in a first direction transversely to a longitudinal axis of the strap. A leg has a first end attached to the strap. The leg extends lengthwise along the strap in spaced apart relation thereto. In a particular example embodiment the strap defines a notch. The notch is positioned distal to the hook and in facing relation to the leg. By way of example the notch may be positioned adjacent to the projection. In another example embodiment the strap defines an opening therethrough. The opening is positioned distal to the hook. The opening has a bore axis oriented transversely to the longitudinal axis of the strap and the first direction. By way of example the opening may comprise a slot. In an example embodiment the opening is positioned adjacent to the projection.
- In a further example embodiment the first end of the leg is attached to the strap adjacent to the hook. Also by way of example the extractor comprises a spur positioned at a second end of the leg oppositely disposed to the first end. The spur extends in a direction parallel to the first direction. An example embodiment comprises a ramp surface positioned on the hook. The ramp surface is angularly oriented with respect to the longitudinal axis of the strap. A further example embodiment comprises a beam having a first end attached to the leg and a second end oppositely disposed. The second end defines an opening therethrough, the opening having a bore axis oriented transversely to the longitudinal axis of the strap and the first direction. In an example embodiment the second end of the beam is positioned adjacent to the projection. By way of example the first end of the beam is attached to the leg proximate to a second end thereof oppositely disposed to the first end.
- The invention also encompasses a firearm for shooting a chambered cartridge. An example firearm embodiment according to the invention comprises a frame. A slide is mounted on the frame and is movable between a position in battery and a position out of battery. An extractor is pivotably mounted on the slide for extracting the chambered cartridge when the slide moves out of battery. In an example embodiment the extractor comprises a hook for engaging the cartridge. An elongated strap extends from the hook. A projection is mounted on the strap distal to the hook. The projection extends in a first direction transversely to a longitudinal axis of the strap. The projection is received within a recess defined by the slide. A leg has a first end attached to the strap. The leg extends lengthwise along the strap in spaced apart relation thereto. The leg has a second end oppositely disposed from the first end. The second end of the leg engages the slide.
- In a particular example embodiment the strap defines a notch. The notch is positioned distal to the hook and in facing relation to the leg. By way of example the notch may be positioned adjacent to the projection. In another example embodiment the strap defines an opening therethrough. The opening is positioned distal to the hook. The opening has a bore axis oriented transversely to the longitudinal axis of the strap and the first direction. By way of example the opening may comprise a slot. In an example embodiment the opening is positioned adjacent to the projection.
- In a further example embodiment the first end of the leg is attached to the strap adjacent to the hook. Also by way of example the extractor comprises a spur positioned at a second end of the leg oppositely disposed to the first end. The spur extends in a direction parallel to the first direction. An example embodiment comprises a ramp surface positioned on the hook. The ramp surface is angularly oriented with respect to the longitudinal axis of the strap. A further example embodiment comprises a beam having a first end attached to the leg and a second end oppositely disposed. The second end defines an opening therethrough, the opening having a bore axis oriented transversely to the longitudinal axis of the strap and the first direction. In an example embodiment the second end of the beam is positioned adjacent to the projection. By way of example the first end of the beam is attached to the leg proximate to a second end thereof oppositely disposed to the first end.
-
FIG. 1 is an isometric exploded view of an example firearm and extractor according to the invention; -
FIG. 2 is an isometric partially cut-away view of the firearm shown inFIG. 1 ; -
FIG. 3 is a partially cut-away top view of a portion of the firearm shown inFIG. 1 ; -
FIG. 3A is a view of a component fromFIG. 3 shown on an enlarged scale; -
FIGS. 4 and 5 are partially cut-away top views illustrating operation of the firearm shown inFIG. 1 ; -
FIG. 6 is a top view of another example embodiment of an extractor according to the invention; -
FIG. 7 is a top view of another example embodiment of an extractor according to the invention; and -
FIGS. 8 and 9 are partially cut-away top views illustrating operation of the firearm using the example extractor embodiment ofFIG. 7 . -
FIG. 1 is an exploded view of afirearm 10 having anexample extractor 12 according to the invention.Firearm 10, in this example a semiautomatic pistol, comprises aframe 14 on which aslide 16 is movably mounted.Slide 16 is slidably movable lengthwise along theframe 14 between a closed position (shown), known as “in battery”, and an open position, known as “out of battery”.Slide 16 cycles in and out of battery during operation of thefirearm 10 to extract a spent cartridge casing and chamber a fresh cartridge which it strips from the firearm's ammunition magazine as is well understood. Theslide 16 may also be cycled manually to extract and/or chamber a live cartridge. Extraction of the cartridge from the firing chamber is effected by theextractor 12 mounted on theslide 16. For simplicity the term “cartridge” is used herein to refer to both a live cartridge as well as a spent cartridge casing. - As shown in
FIGS. 2 and 3 , theexample extractor 12 according to the invention comprises ahook 18. When theslide 16 is in battery (shown),hook 18 is positioned between thebreech block 24 and thebarrel chamber 26 and engages the rim 20 (in this example, a rebated rim) of acartridge 22 in thechamber 26. As shown inFIG. 3 , anelongated strap 28 extends from thehook 18.Strap 28 defines alongitudinal axis 30 which, in this example, extends in a direction substantially parallel to the line of motion of theslide 16. Aprojection 32 is mounted on thestrap 28 distal to thehook 18.Projection 32 extends in afirst direction 34 oriented transversely to thelongitudinal axis 30 of thestrap 28 and is received within arecess 36 defined by theslide 16. Engagement between theprojection 32 and theslide 16 causes theextractor 12 to remain with theslide 16 as it moves out of battery (motion to the left alongaxis 30 inFIG. 3 ), and engagement between thehook 18 and thecartridge rim 20 subsequently extracts thecartridge 22 from thechamber 26. In the example embodiment shown inFIGS. 2 and 3 , thestrap 28 defines anotch 37.Notch 37 is positioned distal to hook 18 and in facing relation with a leg 44 (described below). It is advantageous to positionnotch 37 adjacent to theprojection 32. A pin 42 (see alsoFIG. 1 ) mounted on theslide 16 engages thenotch 37 and retains thestrap 28 to the slide. Engagement between thepin 42 and thenotch 37 allows pivoting motion of thestrap 28 about thelongitudinal axis 39 ofpin 42. Pivoting motion of thestrap 28 permits thehook 18 to deflect and engage therim 20 of a chamberedcartridge 22 as the slide moves into battery as described below. - As further shown in
FIG. 3 theextractor 12 also comprises aleg 44.Leg 44 has afirst end 46 attached to thestrap 28, in this example, the leg is attached adjacent to thehook 18.Leg 44 extends lengthwise along and in spaced apart relation to thestrap 28.Leg 44 has asecond end 48 oppositely disposed from thefirst end 46, thesecond end 48 engaging theslide 16. In this example embodiment aspur 50 is positioned at thesecond end 48 of theleg 44.Spur 50 extends in a direction substantially parallel to thefirst direction 34 in which theprojection 32 extends.Spur 50 is received within areceptacle 52 in theslide 16 and anchors the second end of theleg 44, which thereby acts as a biasing spring when thestrap 28 pivots onpin 42 about thepin axis 39. As shown inFIG. 3A , theextractor 12 further comprises aramp surface 54 positioned on thehook 18.Ramp surface 54 is angularly oriented with respect to thelongitudinal axis 30 of thestrap 28. Theorientation angle 56 is arranged so that thehook 18 pivots away from thecartridge 22 when theramp surface 54 engages the cartridge as theslide 16 moves into battery (motion to the right inFIG. 3 ). - Operation of the
extractor 10 is described with reference toFIGS. 4 and 5 . As shown inFIG. 4 , theslide 16 is in battery, acartridge 22 is chambered, and thehook 18 engages the rebatedrim 20. As theslide 16 moves out of battery (motion to the left), thehook 18 moves with the slide by virtue of the engagement between theprojection 32 and theslide 16, thereby drawing thecartridge 22 out of thechamber 26. Once it clears thechamber 26 the cartridge will hit an ejector (not shown) which flips it out and away from thefirearm 10 through anejector port 58 in the slide (seeFIG. 1 ). With reference toFIG. 5 , as theslide 16 returns to battery it strips and chambers anothercartridge 22. As thecartridge 22 is seated in thechamber 26 the ramp surface 54 (seeFIG. 3A ) engages therim 20 of the cartridge. Theorientation angle 56 of the ramp surface causes thestrap 28 to pivot clockwise onpin 42 about thepin axis 39, thereby allowing the hook to pass over therim 20. The pivoting motion of thestrap 28 bends theleg 44, which acts as a spring to bias thehook 18 toward thecartridge 22. Once thehook 18 clears therim 20 it snaps into engagement with the rim under the biasing force of theleg 44 as depicted inFIG. 4 . - In another
example extractor embodiment 41, shown inFIG. 6 , thestrap 28 defines anopening 38 which has a bore axis 40 oriented transversely to both thelongitudinal axis 30 of thestrap 28 and thefirst direction 34 in which theprojection 32 extends. In this example embodiment theopening 38 is positioned distal to thehook 18, advantageously adjacent to theprojection 32 and may comprise a slot to permit additional free play and more reliable engagement between hook and cartridge. Whenextractor 41 is used in firearm 10 (FIG. 1 ),pin 42, mounted on theslide 16, extends through theopening 38.Pin 42 thus retains thestrap 28 to the slide and allows pivoting motion of the strap about the bore axis 40. Pivoting motion of thestrap 28 permits thehook 18 to deflect and engage therim 20 of a chamberedcartridge 22 as the slide moves into battery as described above. -
FIG. 7 shows another example embodiment of anextractor 60 according to the invention.Extractor 60 comprises ahook 62 for engaging acartridge 22, thehook 62 being positioned between thebreech block 24 and thebarrel chamber 26 whenextractor 60 is mounted on firearm 10 (FIG. 1 ). Anelongated strap 64 extends from thehook 62 and defines alongitudinal axis 66 which extends parallel to the line of motion of theslide 16. Aprojection 68 is mounted on thestrap 64 distal to thehook 62.Projection 68 extends in afirst direction 70 oriented transversely to thelongitudinal axis 66 of thestrap 64 and is received within therecess 36 defined by theslide 16. Engagement between theprojection 68 and theslide 16 causes theextractor 60 to remain with theslide 16 as it moves out of battery (motion to the left inFIG. 7 ) to extract thecartridge 22 from thechamber 26. - As further shown in
FIG. 7 ,extractor 60 comprises a leg 72. Leg 72 has afirst end 74 attached to thestrap 64, in this example adjacent to thehook 62. Leg 72 extends lengthwise along and in spaced apart relation to thestrap 64.Example extractor 60 further comprises abeam 76. Afirst end 78 ofbeam 76 is attached to the leg 72. In this example embodiment attachment of thebeam 76 to the leg 72 is proximate to thesecond end 80 of the leg oppositely disposed to the leg'sfirst end 74.Beam 76 has asecond end 82 oppositely disposed from the beam's first end, thesecond end 82 defining an opening 84 therethrough. In this example opening 84 has a round cross sectional shape, but other shapes, such as a slotted cross section are also feasible. Opening 84 has abore axis 86 oriented transversely to both thelongitudinal axis 66 of thestrap 64 and thefirst direction 70 in which theprojection 68 extends. Whenextractor 60 is mounted on Firearm 10 (seeFIG. 1 ),pin 42, mounted onslide 16, extends through opening 84 and retains theextractor 60 to the slide.Extractor 60 pivots about thebore axis 86 on thepin 42. It is advantageous that the opening 84 be positioned adjacent to theprojection 68 and that thesecond end 80 of the leg 72 be engageable with and react against theslide 16. This configuration allows thebeam 76 to act as a spring to bias thehook 62 toward thecartridge 22.Hook 62 also comprises aramp surface 88 oriented transversely to thelongitudinal axis 66 of thestrap 64. Theorientation angle 90 is arranged so that thehook 62 pivots away from thecartridge 22 as theslide 16 moves into battery. - Operation of the
extractor 60 is described with reference toFIGS. 8 and 9 . As shown inFIG. 8 , theslide 16 is in battery, acartridge 22 is chambered, and thehook 62 engages the rebatedrim 20. As theslide 16 moves out of battery (motion to the left), thehook 62 moves with the slide by virtue of the engagement between theprojection 68 and theslide 16, thereby drawing thecartridge 22 out of thechamber 26. Once it clears thechamber 26 the cartridge will hit an ejector (not shown) which flips it out and away from thefirearm 10 through anejector port 58 in the slide (seeFIG. 1 ). With reference toFIG. 9 , as theslide 16 returns to battery (motion to the right) it strips and chambers anothercartridge 22. As thecartridge 22 is seated in thechamber 26 theramp surface 88 engages therim 20 of the cartridge. The orientation angle 90 (seeFIG. 7 ) of theramp surface 88 causes theextractor 60 to pivot clockwise onpin 42 about thebore axis 86, thereby allowing thehook 62 to pass over therim 20. The pivoting motion of theextractor 60 bends thebeam 76, which acts as a spring to bias thehook 62 toward thecartridge 22. Once the hook clears the rim it snaps into engagement with the rebated rim under the biasing force of thebeam 76 as depicted inFIG. 8 . - It is expected that extractors according to the invention will result in more reliable extraction of spent cartridges, thereby improving the reliability of semiautomatic firearms.
Claims (25)
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US16/776,992 US10907918B2 (en) | 2019-03-20 | 2020-01-30 | Cartridge extractor |
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US11573059B2 (en) * | 2017-06-02 | 2023-02-07 | Gibbens Engineering Group, LLC | Lower receiver |
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US11428484B2 (en) * | 2020-01-17 | 2022-08-30 | Blackpowder Products, Inc. | Firearm |
US11879714B2 (en) | 2022-03-01 | 2024-01-23 | Matthew Sprenger | Firearm cartridge case |
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2020
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Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
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US11573059B2 (en) * | 2017-06-02 | 2023-02-07 | Gibbens Engineering Group, LLC | Lower receiver |
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US10907918B2 (en) | 2021-02-02 |
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